这些系统能够用定常差分方程，有时甚至能用代数方程来描述。
They are described by ordinary difference equations, or in some cases by purely algebraic equations.
简要叙述高分辨率卫星遥感影像的严格几何模型，建立影像姿态角常差检校模型。
The rigorous geometric model based on the collinearity equations is the basic model for object positioning of high resolution remotely sensed imagery.
拙匠常怪工具差。
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